I prefer to avoid looking at other games too much, as I have a tendency to imitate sources of inspiration. ;P
That said, I'd say my inspiration so far have been Final Fantasy XIII (which sparked the automated squads concept) and The Last Remnant (five member parties with a leader). Visual style is meant to be similar to those in TRPG's like FF:Tactics and games from NIS.
Should I run out of ideas, I'll probably take a look at Ogre Battle 64.